Introduced to psychedelics after taking ibogaine while working in Stanford University's organic chemistry department, Carolyn "Mountain Girl" (MG) Garcia was "on the bus" from 1964 through 1967. Trekking across California on Furthur, she helped facilitate the legendary "Acid Tests". During her exploits with the Merry Pranksters, MG and Ken Kesey had a daughter. She settled in San Francisco's Haight-Ashbury in time for the Summer of Love. She later had two daughters with Jerry Garcia of the Grateful Dead, who she married in 1981, and amicably divorced from a few years before he passed away in 1995. Participation in intentionally chosen communities continues to inspire MG--she maintains her interest in the Oregon Country Fair and the Hog Farm.

A cannabis fan and activist, MG wrote The Primo Plant: Growing Sinsemilla Marijuana. First published in 1977, and still in print, it's a straightforward classic on the topic.

MG is widely regarded as an entertaining speaker, with a wry sense of humor, endless font of stories, and impressive collection of counterculture photographs. She has presented at various gatherings geared toward psychoactive drug enthusiasts, including Cartographie Psychedelica, CoSM's Honoring the Divine Feminine, Deep Green, the Psyche-delicatessen, Psychedelic Science in the 21st Century, the World Psychedelic Forum, X-Kosmos, and various salons and congresses produced by the non-profit Women's Visionary Council, of which MG is the president. She is also on the board of directors for the Rex Foundation and the Further Foundation.